2.4.22 PPP filtering for ISDN

[Frank Elsner]

When trying to compile kernel 2.4.22 (from kernel.org) with 
PPP filtering for ISDN enabled by "CONFIG_IPPP_FILTER=y" I get 

    ld -m elf_i386 -T /usr/src/linux-2.4.22/arch/i386/vmlinux.lds -e stext arch/i386
/kernel/head.o arch/i386/kernel/init_task.o init/main.o init/version.o init/do_m
ounts.o \
        --start-group \
        arch/i386/kernel/kernel.o arch/i386/mm/mm.o kernel/kernel.o mm/mm.o fs/f
s.o ipc/ipc.o \
         drivers/parport/driver.o drivers/char/char.o drivers/block/block.o driv
ers/misc/misc.o drivers/net/net.o drivers/ide/idedriver.o drivers/scsi/scsidrv.o
 drivers/cdrom/driver.o drivers/pci/driver.o drivers/video/video.o drivers/media
/media.o drivers/isdn/vmlinux-obj.o \
        net/network.o \
        /usr/src/linux-2.4.22/arch/i386/lib/lib.a /usr/src/linux-2.4.22/lib/lib.
a /usr/src/linux-2.4.22/arch/i386/lib/lib.a \
        --end-group \
        -o vmlinux
drivers/isdn/vmlinux-obj.o: In function `isdn_ppp_ioctl':
drivers/isdn/vmlinux-obj.o(.text+0xe64e): undefined reference to `sk_chk_filter'
drivers/isdn/vmlinux-obj.o: In function `isdn_ppp_push_higher':
drivers/isdn/vmlinux-obj.o(.text+0xf2e5): undefined reference to `sk_run_filter'
drivers/isdn/vmlinux-obj.o(.text+0xf32d): undefined reference to `sk_run_filter'
drivers/isdn/vmlinux-obj.o: In function `isdn_ppp_xmit':
drivers/isdn/vmlinux-obj.o(.text+0xf729): undefined reference to `sk_run_filter'
drivers/isdn/vmlinux-obj.o(.text+0xf78e): undefined reference to `sk_run_filter'
drivers/isdn/vmlinux-obj.o: In function `isdn_ppp_autodial_filter':
drivers/isdn/vmlinux-obj.o(.text+0xfcba): undefined reference to `sk_run_filter'
drivers/isdn/vmlinux-obj.o(.text+0xfce4): more undefined references to `sk_run_f
ilter' follow
make: *** [vmlinux] Error 1

Relevant config options are set as follows:

# ISDN subsystem
CONFIG_ISDN=y
CONFIG_ISDN_BOOL=y
CONFIG_ISDN_PPP=y
CONFIG_ISDN_PPP_VJ=y
CONFIG_ISDN_MPP=y
CONFIG_ISDN_PPP_BSDCOMP=m
CONFIG_ISDN_PPP_LZSCOMP=m          

Where is the problem located ?          


Regards        _______________________________________________________________ 
Frank Elsner  /                         c/o  Technische Universitaet Berlin   |
 ____________/                               ZRZ, Sekr. E-N 50                |
|                                            Einsteinufer 17                  |
| Voice: +49 30 314 23897                    D-10587 Berlin                   |
| SMTP : Elsner@xxxxxxxxxxxxxxxx             Germany    ______________________|
|_______________________________________________________| Momentan ist richtig



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